Answer:
4 sqrt(2) - sqrt(70)
Step-by-step explanation:
Simplify the following:
(4 sqrt(14) + 4 sqrt(10)) (3 sqrt(7) - 4 sqrt(5))
Factor 4 out of 4 sqrt(14) + 4 sqrt(10) giving 4 (sqrt(14) + sqrt(10)):
4 (sqrt(14) + sqrt(10)) (3 sqrt(7) - 4 sqrt(5))
(sqrt(10) + sqrt(14)) (3 sqrt(7) - 4 sqrt(5)) = sqrt(10) (-4 sqrt(5)) + sqrt(10)×3 sqrt(7) + sqrt(14) (-4 sqrt(5)) + sqrt(14)×3 sqrt(7) = -20 sqrt(2) + 3 sqrt(70) - 4 sqrt(70) + 21 sqrt(2) = sqrt(2) - sqrt(70):
Answer: 4 sqrt(2) - sqrt(70)
100-5=95
Basically, Yuna got 95 answers right. In order to find the decimal number representing the portion of her correct answers, we'll just have it divided by 100.
So, 95/100=0.95
The answer is 0.95.
Hope this is the brainliest answer.
Answer:
A. Black Dogs
Step-by-step explanation:
it cant be any other one because it says for every brown dog there are 2 of a different dog. So there are 5 brown dogs so that means there is going to be ten of another kind and that is the black dogs.
The surface area of a cylinder includes the area of two circle bases as well as the tube connecting the bases.
Let's start with the circles. The area is pi*r^2.
pi*3^2 = 9pi
If we were to flatten a cylinder, this tube would actually be a rectangle with a length equal to the circumference of the circle. The circumference of a circle is 2pi*r.
So the rectangle has an area of 7*(2pi*3) = 42pi
There are two circular bases, so the surface area is:
2(9pi) + 42pi = 60pi
Or 60*3.14 = 188.4
